Apple bark

Red alga on apple bark

Apple bark from a village tree with a red algal covering, probably Trentepohlia spp. growing with black cyanobacteria.

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Algae on bark

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Bark sample

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Bark layers

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Trentepohlia cells

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Slide 1: Red algal cover on apple tree bark, probably Trentepohlia spp. February.

Slide 2: Apple bark sample with red algal cover, probably Trentepohlia spp. February.

Slide 3: Edge of apple spp.bark sample, showing layers of bark with Trentepohlia spp. and cyanobacteria. February.

Slide 4: Trentepohlia cells from apple bark. Photographed at x400, phase contrast illumination. February.